Cable water resistance Buddhist nun test macro clamping device
Technical field
The present invention relates to a kind of offshore engineering structure, relate in particular to a kind of large ocean engineering structure cable mechanical property research system.
Background technology
Along with the development of energy industry, oil, gas extraction are progressively drive on boldly to deep water sea area, the mooring structure of production platform be designed to increasingly serious challenge.Traditional firm catenary mooring structure based on wire rope or steel loop, be only applicable to the depth of water at hundreds of rice with interior shallow water area.Because its existence costs an arm and a leg, additional mass is big, replys problems such as rigidity is low, horizontal offset is big, has many drawbacks for the application of deepwater regions.Therefore a kind of novel mooring structure based on synthon with its light weight, cheap, advantageous characteristic such as covering domain is little, more and more is subject to people's attention in the application of deep water mooring.Many in recent years countries and regions have laid stress in the research of synthon mooring system, and have won initial success.
(depth of waters more than 300 meters) develop energy at the deep-sea, all too many levels such as relate to exploitation, store, transport, escort, the works of deep-sea exploitation is normally superhuge, as present FPSO (floating type production, storage and offloading ship) and SPAR (single column platform) etc., how to allow so huge works locate and can operate as normal at sea, its heaving pile and mooring system just become key issue.The multiple mooring system that is used for float structure location is arranged at present, thin etc. as catenary mooring, the mooring of catenary anchor leg, single anchor leg mooring, tension leg mooring, bitt buffering.In general, mooring mode be according to mooring force size, the depth of water, lashing length, whether dispose in the middle of buoyancy aid or caisson, landform and sea bed condition determine.To different ultra-large type works, its purposes difference, thereby the mooring mode is also different.Usually, collect the ultra-large type works environmental data such as the meteorological walrus in marine site is set after, various mooring modes are carried out model test and numerical simulation, determine a kind of suitable mooring mode at last.
Traditional firm catenary mooring structure (CMS) is used to marine ship, and quite long history has been arranged in the mooring structures such as platform, has now had standard about this structure, relates to design, structure, and test is produced, transportation, monitoring or the like aspect.Traditional firm catenary mooring structure uses wirerope or steel loop to be carrier, and system mainly relies on weight of self and geometry that restoring force is provided, the control position of platform.Yet the gravity of the steel cable in water must be born by the buoyancy of platform, thereby has increased very big load to platform, the corresponding actual use tonnage that has reduced platform.Along with the increase of the depth of water, the weight of heaving pile becomes a more and more serious problem.Its wide overlay area puts to no little inconvenience for the intensive operation of oil-gas mining and storage in addition, and economic benefit is reduced.Traditional firm catenary mooring system all has steel construction to constitute to involve great expense, and can produce very big horizontal offset under the atrocious weather condition, the control of the moored position that is unfavorable for fixing a point.Produce returning to drag and to have inconvenience and economic loss after the big side-play amount.Because quality is big, install and transportation very inconvenient, installing or in a single day coming off during one's term of military service or rupture simultaneously, its huge weight can cause very big threat for the engineering construction structure in seabed.Therefore it is big to seek a kind of answer rigidity, light weight, and cheap novel mooring structure becomes the focus of people's growing interest.
Novel mooring structure is a kind of tight leg mooring structure (TMS) that uses the fiber cable as carrier.Use artificial synthon to start from the 1970s and 1980s in last century as the systematic study of mooring material.Nowadays the tight leg mooring system of the fiber cable application of having succeeded in marine sites such as Gulfs.The application of fiber cable in the production mooring system brought huge potential economic benefit.
At first, compare its lighter quality with wirerope and reduced the load that relies on self buoyancy to support the platform of mooring structure significantly, make the load-bearing capacity of goods increase.
Secondly, having higher rigidity, make horizontal offset less, only is 1/4 of traditional firm catenary mooring system usually.This point is significant for the design of suspension cable.
Once more, the covering domain step-length of tight leg formula mooring structure is more much smaller than traditional firm catenary mooring structure.Less covering domain is the densely arranged possibility that becomes of large-scale floating structure such as FPSO, thereby obtains economic benefit.Simultaneously because lighter weight, install or the military service process in fracture or drop the seabed and can't cause potential threat to undersea device.
At last, tight leg mooring system is low than traditional mooring system cost, and is easy to the advantage of transporting and installing because light weight also has.
Viscous fluid is when object flows, and object necessarily is subjected to the pressure of fluid and the effect of tangential stress, these power generally can be decomposed into the acting force consistent with joint efforts with coming flow path direction and perpendicular to the acting force that comes flow path direction.These two power are to the effect of cable, and cable is stressed to be significant to studying.
Summary of the invention
At above-mentioned prior art, the invention provides a kind of cable water resistance Buddhist nun test macro clamping device.Clamping device of the present invention can solve the flexibility of different-diameter and the fixation problem that axially loaded is out of shape big heaving pile, and can solve the acting force consistent and perpendicular to the problem of the acting force that comes flow path direction, for the further research of deep-sea heaving pile provides the foundation to the Different Effects of cable with coming flow path direction.
In order to solve the problems of the technologies described above, the technical scheme that cable water resistance Buddhist nun test macro clamping device of the present invention is achieved is: this clamping device comprises carrying vehicle, described carrying vehicle is by main body, fixed sturcture and wheel constitute, described main body is " H " type framework, described wheel is arranged on four ends of this " H " shape framework, be fixed with circular index plate parts on the centre position of the intermediate transverse girder of described " H " type framework, described fixed sturcture is two and is arranged on described intermediate transverse girder both sides, and it is parallel with described intermediate transverse girder, and be fixed on fixed bar on described " H " type framework; Described circular index plate parts constitute by index plate with the brace summer of described index plate center fixation, and the upper surface of described index plate is a uniform circle circular hole of 30 ° according to the calibration central angle, and the two ends of described brace summer are cantilever; The intermediate transverse girder of described " H " type framework is provided with two pilot holes, and the reference diameter of circular hole equates on the centre distance of described two pilot holes and the described index plate; The cantilever end of described brace summer is fixed with a clamping cantilever respectively, and the bottom of each clamping cantilever is provided with chuck, and relative and intermediate plate that internal orifice is curved constitutes described chuck by two.
Cable water resistance Buddhist nun test macro clamping device of the present invention wherein, is connected by four bolts between two intermediate plates of described chuck, and the distance between two intermediate plates is regulated by bolt.Angle between the intermediate transverse girder of the brace summer in the described circular index plate parts and described " H " type framework is adjustable, can realize the multiple adjustment according to 30 °.Described carrying vehicle adopts the aluminium manufacturing, and " H " type framework wherein is a demountable structure, and the fixed bar that is fixed on described " H " type framework is a demountable structure.The wheel shaft place of described wheel is provided with bearing.
Compared with prior art, the invention has the beneficial effects as follows:
(1) because the curved intermediate plate design of the chuck internal orifice among the present invention has realized the clamping to flexible heaving pile, taken all factors into consideration the axially loaded of heaving pile, and realized clamping the heaving pile of different-diameter, but the heaving pile that its clamping diameter is 10-35mm, and fixing reliable.
(2) the circular index plate parts among the present invention have realized that cable is subjected to the shock simulation of the multi-angle of incoming flow in the deep-sea, adopt this index plate to make the angle of attack of heaving pile can be 0-90 °, and according to 30 ° unit of adjustment.
(3) carrying vehicle adopts aluminum and is designed to detachable rack and panel construction, has both satisfied requirement of strength, can make its light weight again, is beneficial to experiment measuring, reduces error; The bearing of packing in four wheels of carrying vehicle has reduced the resistance of carrying vehicle in the orbital motion of water resistance Buddhist nun test macro.
Description of drawings
Fig. 1 is the structural representation sketch of cable water resistance Buddhist nun test macro clamping device of the present invention;
Fig. 2 is the structural representation sketch of carrying vehicle shown in Fig. 1;
Fig. 3 is the structural representation sketch of circular index plate parts shown in Fig. 1;
Fig. 4 is the structural representation sketch of the cantilever of clamping shown in Fig. 1.
Among the figure:
10---carrying vehicle 20---circular index plate parts 30---clamping cantilevers
11---main body 12---fixed bar 13---wheels
14---intermediate transverse girder 21---index plate 22---brace summers
31---chuck 32---bolt
Embodiment
Below in conjunction with embodiment the present invention is done to describe in further detail.
As shown in Figure 1, cable water resistance Buddhist nun test macro clamping device of the present invention comprises carrying vehicle 10, circular index plate parts 20 and clamping cantilever 30.
As shown in Figure 2, described carrying vehicle 10 is made of main body 11, fixed sturcture and wheel 13, described main body 11 is " H " type framework, described wheel 13 is arranged on four ends of this " H " shape framework, be fixed with circular index plate parts 20 on the centre position of the intermediate transverse girder 14 of described " H " type framework, described fixed sturcture is two and is arranged on described intermediate transverse girder 14 both sides and parallel with described intermediate transverse girder 14 and be fixed on fixed bar 12 on described " H " type framework; Described carrying vehicle 10 adopts the aluminium manufacturing, " H " type framework wherein is a demountable structure, the fixed bar that is fixed on described " H " type framework is a demountable structure, be beneficial to the installation test specimen, carrying vehicle 10 adopts aluminum and is designed to detachable rack and panel construction, both can satisfy requirement of strength, can make its light weight again, be beneficial to experiment measuring, reduce test error.
As shown in Figure 3, described circular index plate parts 20 constitute by index plate 21 with the brace summer 22 of described index plate center fixation, and the upper surface of described index plate 21 is a uniform circle circular hole of 30 ° according to the calibration central angle, and the two ends of described brace summer 22 are cantilever;
As shown in Figure 2, the intermediate transverse girder 14 of described " H " type framework is provided with two pilot holes, and the reference diameter of circular hole equates on the centre distance of described two pilot holes and the described index plate 21; Angle between the intermediate transverse girder 14 of the brace summer 22 in the described circular index plate parts 20 and described " H " type framework is adjustable, circular index plate parts among the present invention have realized that cable is subjected to the shock simulation of the multi-angle of incoming flow in the deep-sea, adopt this index plate to make the angle of attack of heaving pile can be 0-90 °, and carry out the adjustment of angle between the two according to 30 ° unit of adjustment.
As shown in Figure 1, circular index plate parts 20 are fixed on the carrying vehicle 10 of aluminum,,, can realize the variation of cable and direction of motion angle by the index plate different rotation angle for the coupling arrangement of carrying vehicle 20 with clamping cantilever 30 by screw.The cantilever end of the brace summer 22 in the described circular index plate parts 20 is fixed with a clamping cantilever 30 respectively by being threaded, as shown in Figure 3, the clamping cantilever adopts root rectangle small bore, middle part equal strength Cross section Design.The bottom of each clamping cantilever 30 is provided with chuck 31, and relative and intermediate plate that internal orifice is curved constitutes described chuck 31 by two, is connected by four bolts 32 between two intermediate plates of described chuck 31, and the distance between two intermediate plates is regulated by bolt 32.The arc clip design of described chuck 31 has realized the clamping to flexible heaving pile, and has taken all factors into consideration the axially loaded of heaving pile, thereby can realize the clamping to the heaving pile of different-diameter, but the heaving pile that its clamping diameter is 10-35mm, and fixing reliable.
In addition, the wheel shaft place of wheel described in the present invention 13 is provided with bearing, can reduce the resistance of carrying vehicle 10 in the orbital motion of water resistance Buddhist nun test macro.
The installation process of clamping device of the present invention is:
Earlier the brace summer in the circular index plate parts 22 and clamping cantilever 30 are closely coupled together by screw connection structure; Because clamping cantilever 30 is tested as semi-girder, so should be connected firmly with the brace summer that is equivalent to stiff end.
Heaving pile is stuck in two intermediate plates of chuck 31 of clamping cantilever 30 lower ends, cable is fixed by four bolts adjusting between two intermediate plates; When heaving pile is installed in the lower end of clamping cantilever 30, should notice that two clamping cantilevers 30 are simultaneously fastening, guarantee that the clamping degree of 30 pairs of heaving piles of two clamping cantilevers is identical.
With the circular index plate parts 20 that link together, clamping cantilever 30 and heaving pile again with the track that is placed on water resistance Buddhist nun test macro on carrying vehicle 10 be connected, that is: according in the test to the requirement of cable and direction of motion angle, a pair of circular hole on the index plate 21 in a pair of pilot hole on the intermediate transverse girder 14 of carrying vehicle 10 and the described circular index plate parts 20 is aligned, use bolt, again the center pit of index plate 21 and the interstitial hole of intermediate transverse girder 14 are aligned, use bolt.
Although top invention has been described in conjunction with figure; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; under the situation that does not break away from aim of the present invention, can also make a lot of distortion, these all belong within the protection of the present invention.